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Finding the Fourth Proportional to 103,515.10, 155,309.10 and 44,368.90

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Solution

The fourth proportional to 103,515.10, 155,309.10 and 44,368.90 is: 66,568.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.10 : 155,309.10 = 44,368.90 : x
  2. Step 2: Convert to fraction form
    103,515.10/155,309.10 = 44,368.90/x
  3. Step 3: Cross multiply
    103,515.10x = 155,309.10 × 44,368.90
  4. Step 4: Simplify right side
    103,515.10x = 6,890,893,926.99
  5. Step 5: Solve for x
    x = 6,890,893,926.99/103,515.10
  6. Step 6: Final answer
    x = 66,568.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.